PHP | join() Function
The join() function is built-in function in PHP and is used to join an array of elements which are separated by a string. Syntax
string join( $separator, $array)
Parameter: The join() function accepts two parameters out of which one is optional and one is mandatory.
- $separator : This is an optional parameter and is of string type. The values of the array will be join to form a string and will be separated by the $separator parameter provided here. This is optional, if not provided the default is “” (i.e. an empty string)
- $array : The array whose value is to be joined to form a string.
Return Type: The return type of join() function is string. It will return the joined string formed from the elements of $array. Examples:
Input : join(array('Geeks','for','Geeks') Output : GeeksforGeeks Input : join("-",array('Geeks','for','Geeks') Output : Geeks-for-Geeks
Below program illustrates the working of join() function in PHP:
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